40154417 has 2 divisors, whose sum is σ = 40154418. Its totient is φ = 40154416.

The previous prime is 40154407. The next prime is 40154423. The reversal of 40154417 is 71445104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30426256 + 9728161 = 5516^2 + 3119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40154417 is a prime.

It is a super-2 number, since 2×40154417² = 3224754409219778, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40154407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077208 + 20077209.

It is an arithmetic number, because the mean of its divisors is an integer number (20077209).

Almost surely, 2^40154417 is an apocalyptic number.

It is an amenable number.

40154417 is a deficient number, since it is larger than the sum of its proper divisors (1).

40154417 is an equidigital number, since it uses as much as digits as its factorization.

40154417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 40154417 is about 6336.7512969975. The cubic root of 40154417 is about 342.4347065048.

The spelling of 40154417 in words is "forty million, one hundred fifty-four thousand, four hundred seventeen".